/*
 * Copyright (c) 2018, Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include "unit_tests/fixtures/image_fixture.h"
#include "unit_tests/mocks/mock_device.h"
#include "unit_tests/mocks/mock_context.h"
#include "gtest/gtest.h"

using namespace OCLRT;

class ImageHostPtrTransferTests : public testing::Test {

  public:
    void SetUp() override {
        device.reset(Device::create<MockDevice>(*platformDevices));
        context.reset(new MockContext(device.get()));
    }

    template <typename ImageTraits>
    void createImageAndSetTestParams() {
        image.reset(ImageHelper<ImageUseHostPtr<ImageTraits>>::create(context.get()));

        imgDesc = &image->getImageDesc();
        copyOrigin = {{imgDesc->image_width / 2, imgDesc->image_height / 2, imgDesc->image_depth / 2}};
        copyRegion = copyOrigin;

        hostPtrSlicePitch = image->getHostPtrSlicePitch();
        hostPtrRowPitch = image->getHostPtrRowPitch();
        imageSlicePitch = image->getImageDesc().image_slice_pitch;
        imageRowPitch = image->getImageDesc().image_row_pitch;
        pixelSize = image->getSurfaceFormatInfo().ImageElementSizeInBytes;
    }

    void setExpectedData(uint8_t *dstPtr, size_t slicePitch, size_t rowPitch) {
        for (size_t slice = copyOrigin[2]; slice < (copyOrigin[2] + copyRegion[2]); slice++) {
            auto sliceOffset = ptrOffset(dstPtr, slicePitch * slice);
            for (size_t height = copyOrigin[1]; height < (copyOrigin[1] + copyRegion[1]); height++) {
                auto rowOffset = ptrOffset(sliceOffset, rowPitch * height);
                memset(ptrOffset(rowOffset, copyOrigin[0] * pixelSize), 123, copyRegion[0] * pixelSize);
            }
        }
    }

    std::unique_ptr<MockDevice> device;
    std::unique_ptr<MockContext> context;
    std::unique_ptr<Image> image;

    std::array<size_t, 3> copyRegion;
    std::array<size_t, 3> copyOrigin;

    const cl_image_desc *imgDesc = nullptr;
    size_t hostPtrSlicePitch, hostPtrRowPitch, imageSlicePitch, imageRowPitch, pixelSize;
};

TEST_F(ImageHostPtrTransferTests, given3dImageWhenTransferToHostPtrCalledThenCopyRequestedRegionAndOriginOnly) {
    createImageAndSetTestParams<Image3dDefaults>();
    EXPECT_NE(hostPtrSlicePitch, imageSlicePitch);
    EXPECT_NE(hostPtrRowPitch, imageRowPitch);
    EXPECT_NE(image->getCpuAddress(), image->getHostPtr());

    std::unique_ptr<uint8_t> expectedHostPtr(new uint8_t[hostPtrSlicePitch * imgDesc->image_depth]);
    memset(image->getHostPtr(), 0, hostPtrSlicePitch * imgDesc->image_depth);
    memset(expectedHostPtr.get(), 0, hostPtrSlicePitch * imgDesc->image_depth);
    memset(image->getCpuAddress(), 123, imageSlicePitch * imgDesc->image_depth);

    setExpectedData(expectedHostPtr.get(), hostPtrSlicePitch, hostPtrRowPitch);

    image->transferDataToHostPtr(copyRegion, copyOrigin);

    EXPECT_TRUE(memcmp(image->getHostPtr(), expectedHostPtr.get(), hostPtrSlicePitch * imgDesc->image_depth) == 0);
}

TEST_F(ImageHostPtrTransferTests, given3dImageWhenTransferFromHostPtrCalledThenCopyRequestedRegionAndOriginOnly) {
    createImageAndSetTestParams<Image3dDefaults>();
    EXPECT_NE(hostPtrSlicePitch, imageSlicePitch);
    EXPECT_NE(hostPtrRowPitch, imageRowPitch);
    EXPECT_NE(image->getCpuAddress(), image->getHostPtr());

    std::unique_ptr<uint8_t> expectedImageData(new uint8_t[imageSlicePitch * imgDesc->image_depth]);
    memset(image->getHostPtr(), 123, hostPtrSlicePitch * imgDesc->image_depth);
    memset(expectedImageData.get(), 0, imageSlicePitch * imgDesc->image_depth);
    memset(image->getCpuAddress(), 0, imageSlicePitch * imgDesc->image_depth);

    setExpectedData(expectedImageData.get(), imageSlicePitch, imageRowPitch);

    image->transferDataFromHostPtr(copyRegion, copyOrigin);

    EXPECT_TRUE(memcmp(image->getCpuAddress(), expectedImageData.get(), imageSlicePitch * imgDesc->image_depth) == 0);
}

TEST_F(ImageHostPtrTransferTests, given2dArrayImageWhenTransferToHostPtrCalledThenCopyRequestedRegionAndOriginOnly) {
    createImageAndSetTestParams<Image2dArrayDefaults>();
    EXPECT_NE(hostPtrSlicePitch, imageSlicePitch);
    EXPECT_NE(hostPtrRowPitch, imageRowPitch);
    EXPECT_NE(image->getCpuAddress(), image->getHostPtr());

    std::unique_ptr<uint8_t> expectedHostPtr(new uint8_t[hostPtrSlicePitch * imgDesc->image_depth]);
    memset(image->getHostPtr(), 0, hostPtrSlicePitch * imgDesc->image_depth);
    memset(expectedHostPtr.get(), 0, hostPtrSlicePitch * imgDesc->image_depth);
    memset(image->getCpuAddress(), 123, imageSlicePitch * imgDesc->image_depth);

    setExpectedData(expectedHostPtr.get(), hostPtrSlicePitch, hostPtrRowPitch);

    image->transferDataToHostPtr(copyRegion, copyOrigin);

    EXPECT_TRUE(memcmp(image->getHostPtr(), expectedHostPtr.get(), hostPtrSlicePitch * imgDesc->image_depth) == 0);
}

TEST_F(ImageHostPtrTransferTests, given2dArrayImageWhenTransferFromHostPtrCalledThenCopyRequestedRegionAndOriginOnly) {
    createImageAndSetTestParams<Image2dArrayDefaults>();
    EXPECT_NE(hostPtrSlicePitch, imageSlicePitch);
    EXPECT_NE(hostPtrRowPitch, imageRowPitch);
    EXPECT_NE(image->getCpuAddress(), image->getHostPtr());

    std::unique_ptr<uint8_t> expectedImageData(new uint8_t[imageSlicePitch * imgDesc->image_depth]);
    memset(image->getHostPtr(), 123, hostPtrSlicePitch * imgDesc->image_depth);
    memset(expectedImageData.get(), 0, imageSlicePitch * imgDesc->image_depth);
    memset(image->getCpuAddress(), 0, imageSlicePitch * imgDesc->image_depth);

    setExpectedData(expectedImageData.get(), imageSlicePitch, imageRowPitch);

    image->transferDataFromHostPtr(copyRegion, copyOrigin);

    EXPECT_TRUE(memcmp(image->getCpuAddress(), expectedImageData.get(), imageSlicePitch * imgDesc->image_depth) == 0);
}